def test_last_subpart_for_odd_len(self):
     self.assertEqual(range(60, 81), two_sum_algorithm._get_subpart(range(0, 81), 3, 4))
 def test_first_subpart_for_even_len(self):
     self.assertEqual(range(0, 20), two_sum_algorithm._get_subpart(range(0, 80), 0, 4))
 def test_second_subpart_for_even_len(self):
     self.assertEqual(range(20, 40), two_sum_algorithm._get_subpart(range(0, 80), 1, 4))